Cervical mucocele (plunging ranula): an unusual case of mucous extravasation cyst.

An unusual case of a mucous extravasation cyst that manifest itself solely as a cervical swelling is reported. As a result of this unusual symptom, diagnosis and appropriate treatment were delayed, and the condition finally resolved after the ipsilateral sublingual salivary gland was excised and the cervical fluid was aspirated. Cervical mucoceles have also been reported in dogs, and the veterinary literature pertaining to this is briefly reviewed.